from brazil and argentina, taxes are low across the region. how do you increase them. as we all know in the united states, entitlements once given are hard to take back. it's hard to read about those who climbed out of poverty. but latin america faces challenge to sustain these gains, otherwise we could look back on this period as a peak from which it fell. >>> up next we tend to think of international politics as a complicated science. my next guest says it's actually quite simple and it pertains to a subject we've all been taught about in school. i'll explain. all energy development comes with some risk, but proven technologies allow natural gas producers to supply affordable, cleaner energy, while protecting our environment. across america, these technologies protect air - by monitoring air quality and reducing emissions... ...protect water - through conservation and self-contained recycling systems... ... and protect land - by reducing our footprint and respecting wildlife. america's natural gas... domestic, abundant, clean energy to power our lives... that's smarter power today.